task_charts__single_series__monotone_streak_length

Contract

1. Domain: charts
2. Scene id: single_series
3. Source implementation: src/trace_tasks/tasks/charts/single_series/monotone_streak_length.py
4. Public task id: task_charts__single_series__monotone_streak_length
5. Supported query_id values: longest_increasing_streak_length, longest_decreasing_streak_length
6. Query ids are internal replay metadata; scene style, label pool, mark count, and context mode are generation metadata.

Implementation

1. Registered class: trace_tasks.tasks.charts.single_series.monotone_streak_length.ChartsTrendMonotoneStreakLengthTask
2. Prompt lookup: src/trace_tasks/resources/prompts/charts/single_series/charts_trend_v1.json
3. Generation is deterministic from instance_seed, explicit params, prompt bundle, renderer config, and code versions.
4. Answers and annotation are produced from the same metadata execution trace.

Program Contract

Program: length(unique_longest_monotone_run(sequence(values), direction)); output=integer_value; annotation=point_set(run_marks); scene=single_series; scope=monotone_streak_length

Candidate set: the visible marks in the ordered single-series chart inside the monotone_streak_length objective scope. Operands: prompt-bound labels, categories, series names, thresholds, intervals, references, and encoded chart values, plus the active query id's comparator, direction, target role, or extremum focus when present. Operation: evaluate length over the candidate set using the filters, comparisons, aggregations, rankings, projections, or counterfactual edits named in the program expression; generation enforces a unique final answer. Output binding: answer is the integer_value value bound by integer_value. Annotation witnesses: point_set witnesses bound by point_set(run_marks). Annotation marks every visible mark in the unique longest monotone run. Axes, legend, titles, captions, decorative context, and distractor text are context unless the task explicitly asks for them as annotation. Query ids: longest_increasing_streak_length, longest_decreasing_streak_length.

Reasoning Operations

Families: filtering, counting, ranking

Annotation Contract

1. Answer schema: integer_value.
2. Annotation schema: point_set.
3. Annotation marks every visible mark in the unique longest monotone run.
4. Axes, legend, titles, captions, decorative context, and distractor text are context unless the task explicitly asks for them as annotation.

Query Details

Query id	Program signature	Answer schema	Annotation schema
longest_increasing_streak_length	length.unique_longest_increasing_run	integer_value	point_set
longest_decreasing_streak_length	length.unique_longest_decreasing_run	integer_value	point_set